Eot stone



R. STONE.

r Hydraulic Excavating.

P atentedflFeb. 10, I880.

IINVVENTOR:

k WITNESSES:

N. PETERS, wormLn-noan UNITED STATES PATE T QFFICE.

ROY sToNE,oF NEW YORK, N. Y.

HYDRAULIC EXCAVATING.

SPECIFICATION forming part of Letters Patent No. 224,309, dated February 10,1880. Application filed September 16, 1879.

To all whom it mag concern:

Be it known that I, ROY STONE, of the city, county, and State of New York, have invented a new and useful Improvement in Hydraulic Excavating, of which the following is a specification.

The invention consists, first, of an improved method of hydraulic excavating in which the earth is loosened by a stream of water. under pressure and removed by an induced current,

formed by another stream discharged under water into a conducting-pipe; second, of the apparatus for such hydraulic excavating, comprising a conducting-pipe, a boring-nozzle for loosening the earth, an ejector-nozzle for creating the current, hose or connecting pipes for bringing the water from a pump or reservoir, with gates for regulating the flow of the same,

suspending chains or ropes, and guys for bold ing the pipe against currents or moving it in any desired direction.

The following is a description of my appa ratus and its method of operati0n,.the letters referring to the accompanying diagram.

The eonductingpipe' 0 has a projecting basket, of iron, B, converging and terminating in the central ring, B, through which the nozzleNoftheboring-pipe projects. Backward from the ring this pipe bends upward through the bars of the basket, then downward for attachment to the conductingrpipe, then upward again for its hose-connection.

The ejector-nozzle I enters the conductingpipe on top near the receiving end, curves toward the other end, and discharges in the arc is of the pipe. v

The apparatus is suspended by the chains M M from the deck of a soow, which carries the force-pump and suitable hoisting appara- 0 tus.

In operation, the stream from the ejectornozzle tends to push the column of water out of the conducting-pipe, and the pressure of feet long an ejected stream of one and onequarter inch diameter, under pressure of one hundred and fifty pounds per square inch, and

discharging about four hundred and twenty gallons per minute, causes a total discharge of five thousand six hundred gallons per minute, or an induced current of five thousand one hundred and eighty gallons, and the force of the current is sufficient to lift from the bottom, in thirty feet of water, and bring to the surface any stones that will pass the basket or the ejector-nozzle in the pipe. v What I claim, and desire to secure by Let- .ters Patent, is

1. An improved method of hydraulic excavatin gin the loosening of the earth by a stream of water under pressure and removing it by an induced current caused by another stream, also under pressure, substantially as shown and described.

2. An improved apparatus for hydraulic eX- cavat-ing, comprising a con ductingpipe, a boring-pipe to discharge a stream of water under pressure, and an ejector, substantially as shown and described.

ROY STONE.

' Witnesses:

EUGENE SMITH,

J. W. WEST. 

